Articulated locomotive.



L. W. BARGER.

ARTIGULATED LOGOMOTIVE. APPLICATION FILED 1120.9, 1912.

Patented Apr. 1, 1913.

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L. W. BARGER. l ARTICULATED LOGOMOTIVE. APPLICATION FILED 1320.9, 1912.

Patented Apr. 1

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LORIN W. BARGER, OF DAVENPORT, IOWA, ASSIGNOR TO DAVENPORT LOCOMOTIVEWORKS, OF DAVENPORT, IOWA, A CORPORATION OF IOWA.

ARTICULATED LOCOMOTIVE.

To all whom t may concern Be it known that I, LoRrN W. BARGER, a citizenof the United States, residing' at Davenport, in the county of Scott andState of Iowa, have invented new and useful Improvements in ArticulatedLocomotives, of which the following is a full, clear, and exactdescription.

My invention relates to-what is known as articulated engines, in whichthe cylinders and driving-gear are mounted on front and` rear trucks,and the boiler is carried by a suitable underframe supported by saidtrucks, and generates the steam which 1s suitably conveyed to andexhausted from said cylinders.

My invention has for its object the transmission of t-he live andexhaust steam from the superstructure of the locomotive to the trucksand vice versa, in such manner that the turning of the trucks within thearc described by the curves of the track does not interfere with thepassage of the same. This and other advantages-I accomplish by thecomparatively simple means hereinafter fully described, and asparticularly pointed out in the claims.

In the drawings: Figure 1 is a side elevation of a portion ofalocomotive embodying my invention. Fig. 2 is a transverse sectionthereof taken on dotted line 2 2, Fig. l. Fig. 3 is a plan view takenbelow the plane of the boiler. Fig. 4L is a longitudinal section. Fig. 5is a vertical central section of a modification of my invention. Fig. 6is a horizontal section taken on 4dotted line 6 6, Fig. 5.

Referring to the drawings, A represents the boiler of a locomotive; Bthe steamdome thereof, and C the pipes leading from the throttle-valvesituated in said dome and extending down in a suitable direction outSpecification of Letters Patent.

Application filed December 9, 1912.

Patented Apr. 1, 1913. serial No. 735,604.

truck by a bolster F. This bolster has secured to the lower edges of thechannel beams that constitute its parallel transverse members, acenter-bearing Gr that consists of a tubular casting the underside ofwhich is depressed to fo-rm a seat for the upper portion of thecenter-bearing I-I of the truck with the pivotal axis of which its axisalines. Midway between the transverse members of the bolster is anexhaust nipple a that extends to and contacts with the underside of thesmoke-box ZJ, of the locomotive, and secured to the bottom of thissmoke-box by means of a suitable circumferential flange is a verticallydisposed exhaust-nozzle 0, whose axis alines with and which is adaptedto forcibly discharge the exhaust up through and out of the smoke-stackCZ.

rlhe bore of the tubular center-bearing G is provided with a series ofinwardly projecting lugs, and these lugs support and suspend, concentricwith the exterior of center-bearing, the female portion of avalvecoupling, the upper partof which is formed into a pipe stub 2,which latter is connected by means of the nipple a to the lower end ofthe exhaust nozzle c, as stated. The lower portion of said female memberis made semi' spherical and it is provided with an opening connectingthe bore of the stub with the concavity thereof, and is also providedbelow its apex and below the plane of the opening leading from the boreof said stub 2, with a transversely elongated opening 5. Surroundingand' inclosing this opening 5, is a boss 6 of suitable construction,that is cast integral with said female member and has an opening in itsouter wall into which one end of a pipe E is inserted and suitablysecured. Engaging and seated in the concavity of said female member, isthe head 7- of a tubular male member, which is somewhat spherical inshape, and is adapted to fit snugly within the semi-spherical portion ofthe female member. The portion of the male member below its head isreduced in diameter and its lower end terminates in a stub 8 into whicha pipe 9 is inserted and secured. This pipe 9 leads to and has itsopposite end suitably secured to the steamexhaust 10 of a cylinder 11.The male member below its head is provided with a rearwardly projectingstub 12, and this stub is connected by means of a suitable pipe 13 tothe exhaust chamber of the steam-chest. The male member is dividedlongitudinally into two passages by means of a transverse web orpartition 7, that extends from a point just below the pipe stub 12 whereit curves toward and merges into the exterior wall of the male member.The upper end of this web extends to and merges into the top portion ofthe head of the male member, and leaves one passage extending from thelower terminal stub 8 of said member to a transversely elongated orifice14 that registers and communicates with the opening 5 of thesemi-circular portion of the female member, Steam entering boss 6 fromthe pipe E will pass through opening 5 and through orice 14 and downthrough the passage connecting the same with pipe 13, through whichlatter the steam will be conducted to and enter the steam-chest. Theexhaust steam discharging from the steam-chest will pass through pipe 9,through stub 8 and into the other passage of the male member, and thenup through the last mentioned passage through an opening in the top ofthe head thereof, and be discharged into the exhaust nipple a from thestub at the upper end of the female member. The opening in the upper endof the male member is so centrally located and the transverselyelongated orifice 14 is of such length that the live steam and theexhaust steam will pass through said female and male members comprisingsaid joint or coupling, no matter to what angle to the axis of theboiler the truclr may turn in its travels over the `rails of the cartrack.

.Under all conditions the passage of the live and exhaust steam throughthe centerbearings of the truck and body-bolster is maintained, andthere is practically no danger of this center steam connection beinginjured or obstructed by any condition involving its use. In Figs. 5 and6 of the drawings, I show a modified construction of means forpermitting this simultaneous passing of the live and exhaust steamthrough the pivotal connections ofthe cartrucks with the superstructureof the locomotives. This modification comprises structural changes inthe center-bearing castings of the locomotive under-frame, and truckstherefor, that dispense with the necessity for a pipe coupling such ashereinbefore described. The top of the upper or female center-bearingcasting 15 is rectangular in shape, and its transverse edges 1G areflanged upward, and it is secured flat against the underside of thebody-bolster with said flanges lapping against the longitudinal edges ofthe same. This center bearing is provided with a central bore 17 thatextends down into said bearing a suitable distance, but not clearthrough it, and it has a lateral orifice 18 adjacent its lower end thatconnects it with a chamber 19, which latter is, preferably, quadrantshaped in horizontal section, and extends from said orifice 18 downthrough the bottom of the bearing. This center bearing casting also hasa chamber 20 therein which is located diametrically opposite and is,preferably,A of the same shape and dimensions as chamber 19. The pipe Eis tapped into bearing 15, and discharges into chamber 20, and a pipe ais tapped into the upper end of the bore 17, and connects it with theexhaust nozzle o. The lower end of the center bearing casting 15 iscircular and it is provided wit-h an outwardly and then downwardlyprojecting circumferential flange, 21, that provides a seat for andconfines the upper circular end of the center bearing casting 22 of thetruck. This truck bearing is secured in any wellknown manner to thetruck-bolster, and aside from its exterior shape, which differs fromthat of the upper bearing 15 to the extent required by its principalfunction, it 1s constructed just the reverse of the upper centerbearing. Tn other words, it is, as will be observed, provided with acentral bore 23 that extends from its under side to near the upper endof the casting, but not clear through it, and its upper end is providedwith an orifice 24 that discharges into a chamber 25, which latter isquadrant shaped in horizontal section and extends from the orifice 24 upthrough the upper end of the casting, and when the truclr is travelingin the direction of the length of the locomotive, y it registers andcommunicates with chamber 20 of the upper casting to which it,preferably, corresponds in dimensions. Diametri cally opposite chamber25 this lower or truck center bearing casting is provided with a chamber26 which corresponds in shape and dimensions therewith and extends froma point about in the same horizontal plane as the floor of chamber 25and registers and communicates with chamber 19 of the upper bearingcasting, to which it, preferably, corresponds in horizontal dimensions.The lower end of the bore 23 is connected by the pipe 9 to the steamexhaust of the vcylinder and the chamber26 of the lower center castingis connected to the discharge pipe 13 with the exhaust chamber of thesteam chest. In operation, live steam entering chamber 2O of the uppercenter bearing casting through pipe E `will pass into chamber 25 of thelower center bearing casting and from thence through orifice 24 intobore 23 and through pipe 9 to the steam-exhaust. The exhaust steam fromthe steam chest will pass through pipe 13 and enter chamber 26 of thelower center bearing casting and pass up into chamber 19, from thencethrough orifice 18 into the bore 17, and out through the nipple a intothe exhaust nozzle c of the locomotive. The quadrant shape of thereceiving-chambers 20 and 25 and of the exhaust-chambers 19 and 26 ofthese centerbearing castings will insure said chambers being incommunication with each other all the time, because the establishedcurves of railroad tracks seldom exceed 18 degrees, and thus the flow ofthe live steam from the boiler of the locomotive through thesecenter-bearings to the cylinder supported by the trucks, and the exhauststeam from said cylinders through said center-bearings to and out of theexhaust-nozzle of the locomotive will never be interfered with.

I do not desire to be conned to any particular mechanical structure forpassingv the live and exhaust steam through the centerbearings of thebody and truck holsters, for, as hereinbefore demonstrated, this may bedone in several ways. All means for accomplishing this result,I'consider as coming within the scope of my invention.

lVhat I claim as new is:

1. The combination with the superstructure of a locomotive including theboiler thereof, and upper center bearings secured thereto, trucks, steamactuated devices for propelling the same, and lower center bearingssecured to said truck` that pivotally engage said upper center bearings,said center bearings adapted to permit the simultaneous passagetherethrough of the steam from said boiler to said steam actuateddevices, and from said devices to the steam exhaust members of thelocomotive superstructure.

2. The combination with the superstructure of a locomotive including thesteam generator thereof, an upper center bearing secured to saidsuperstructure, a truck, steam actuated devices mounted thereon, and thelower center bearing on said truck that pivotally engages said uppercenter bearing; said center bearings adapted to permit the passagetherethrough of the steam from the generator to said actuating devicesand from `said devices to the steam exhaust members of the locomotivesuperstructure during both the pivotal and normal positions of thetruck.

3. The combination with the superstructure of a locomotive including thesteam generator thereof, an upper center bearing secured to saidsuperstructure, a. truck, steam actuated devices mounted thereon, andthe lower center bearing on said truck that pivotally engages said uppercenter bearing; and steam fixtures connecting the said generator andactuating devices and also connect said devices and the steamexhaustmembers of the locomotive superstructure, both of which passthrough said center bearings.

4:. rlhe combination with the superstructure of a locomotive includingthe steam generator thereof, an upper center bearing` secured to saidsuperstructure, a truck, steam actuated devices mounted thereon, and thelower center bearing on said truck that pivotally engages said uppercenter bearing; and steam fixtures connecting the said generator andactuating devices and also connect said devices and the steam exhaustmembers of the locomotive superstructure, both of which pass verticallythrough said center bearing, and have a pivotally jointed connection inthe vertical stretch thereof.

5. The combination with the superstructure of a locomotive including theboiler, furnace, smoke-box and smoke-stack thereof, an upper centerbearing secured to said superstructure, a truck, steam actuated devicesmounted thereon, and the lower center bearing on said truck thatpivotally engages said upper center bearing; a live steam pipe extendingfrom said boiler to said upper bearing, and an exhaust pipecommunicating with and leading from said bearing and discharging intosaidsmoke-box, alive steam pipe extending from said lower center bearingto said actuating devices and an exhaust pipe leading from said devicesand communicating with said lower center plate, and a pivotal couplingconnecting said steam pipes with said exhaust pipes.

6. The combination with the superstructure of a locomotive including theboiler, furnace, smoke-box and smoke-stack thereof, an upper centerbearing secured to said superstructure, a truck, steam actuated devicesmounted thereon, and the lower center bearing on said truck thatpivotally engages at said upper center bearing; a live steam pipeextending from saidv boiler to said upper bearing, and an exhaust pipeleading from said bearing and discharges into said smoke-box, a livesteam pipe extending from said lower center bearing to said actuatingdevices and an exhaust pipe from said devices to said lower centerplate, and an integral common coupling connecting said steam pipes andsaid exhaust pipes.

7 In an articulated locomotive, an underfra-me, a hollow uppercenter-bearing secured thereto, a truck, cross-member connecting theside-frames thereof, and a hollow lower center-bearing secured to saidcross-member and supporting said upper center-bearing with the bore ofwhich its bore communicates, a live steam pipe extending from saidboiler laterally into the bore of the upper center-bearing, and anexhaust pipe leading axially from the top of the same, a live steam pipeleading axially from the lower end of said lower center bearing, Inwitness whereof l have hereunto set and an exhaust pipe leadinglaterally into my hand this 19 day of November.

the same, and a pivotal cou lin oonsistin of an upper and lower memberad supportg-F LORIN W' BARGER l ed within the bores of said hearings andcon- Vitnesses nectecl the two live steam pipes and the two VICTOR F.LCHT,

exhaust steam pipes. W. CHADWIGK.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, I). C.

